CN113609716A - Infrared temperature measurement visual simulation method and device for substation equipment - Google Patents
Infrared temperature measurement visual simulation method and device for substation equipment Download PDFInfo
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Abstract
The invention discloses an infrared temperature measurement visual simulation method and device for substation equipment. In the embodiment of the invention, a model of an infrared thermal imaging dynamic map is established, and a three-dimensional model of the transformer substation equipment for infrared temperature measurement is established; according to the model of the infrared thermal imaging dynamic map, creating an infrared imaging map of a three-dimensional model of the substation equipment; and determining the temperature of the substation equipment, and generating an infrared temperature measurement image of the substation equipment according to the temperature and the infrared imaging map. By utilizing the method and the device, the infrared temperature measurement image of real substation equipment can be simulated, the infrared temperature measurement image is used for carrying out infrared temperature measurement practical operation skill training, examination, skill identification and the like on the substation operation and maintenance personnel, and meanwhile, the risk degree of a real site is reduced.
Description
Technical Field
The invention relates to an infrared temperature measurement visual simulation method for substation equipment, and also relates to a corresponding infrared temperature measurement visual simulation device, belonging to the technical field of virtual reality.
Background
Since the high-voltage electrical equipment of the substation vibrates during operation, poor contact may occur at the lead connection portion and the conductor connection portion after a long-time operation, and the temperature of the contact portion may be rapidly increased. Some oil-filled electrical equipment may experience internal short circuit failures, which also cause temperature increases. If high-temperature defects are not found in time, the equipment is greatly influenced, and even explosion can occur in serious cases. The transformer operation and maintenance personnel are required to regularly carry out infrared temperature measurement on the high-voltage electrical equipment, find fault points with high temperature and isolate the fault equipment, and the transformer operation and maintenance personnel are put into operation after the maintenance is finished, so that the stable operation of the power grid is guaranteed. Currently, the infrared temperature measurement of a transformer substation becomes the daily main work of transformer operation and maintenance personnel. This is a major skill that must be mastered by the substation operation and maintenance personnel. However, since the high-temperature abnormality rarely occurs in the equipment that is in daily operation in the substation, the staff cannot often see the heat generation phenomenon, and cannot perform the practice and study on the physical equipment.
In the chinese patent invention No. ZL 202010776303.8, a real-time visual simulation method of infrared characteristics in virtual reality is disclosed, which comprises the following steps: establishing a geometric model of a measured target, setting virtual scene parameters, generating infrared characteristic data, and rendering visible light and infrared characteristics in real time. The technical scheme can solve the problem that complex infrared characteristic simulation is difficult to realize under the condition that real-time rendering capability is limited, the simulation method is flexibly applied to function simulation and training simulation of various infrared temperature measurement devices, real-time simulation and display of all-dimensional infrared characteristics of a measured geometric body are supported, stepless fusion among multiple infrared states of the measured geometric body can be carried out, infrared image key point identification is supported, high-fidelity rendering can be carried out on mainstream graphic display equipment and virtual reality equipment, the calculation efficiency is guaranteed, and the low-delay characteristic of operation is realized.
Disclosure of Invention
The invention aims to provide a substation equipment-oriented infrared temperature measurement visual simulation method.
The invention aims to solve another technical problem of providing a substation equipment-oriented infrared temperature measurement visual simulation device.
In order to achieve the purpose, the invention adopts the following technical scheme:
according to a first aspect of the embodiments of the present invention, a method for visually simulating infrared temperature measurement of substation equipment is provided, which includes the following steps:
establishing a model of an infrared thermal imaging dynamic map, and establishing a three-dimensional model of the transformer substation equipment for infrared temperature measurement;
creating an infrared imaging map of a three-dimensional model of the substation equipment according to the model of the infrared thermal imaging dynamic map;
and determining the temperature of the substation equipment, and generating an infrared temperature measurement image of the substation equipment according to the temperature and the infrared imaging map.
According to a second aspect of the embodiments of the present invention, there is provided a visual simulation apparatus for infrared temperature measurement of substation equipment, including:
the building module is used for building a model of the infrared thermal imaging dynamic map and building a three-dimensional model of the transformer substation equipment for infrared temperature measurement;
the creating module is used for creating an infrared imaging map of the three-dimensional model of the substation equipment according to the model of the infrared thermal imaging dynamic map;
and the generating module is used for determining the temperature of the substation equipment and generating an infrared temperature measurement image of the substation equipment according to the temperature and the infrared imaging map.
By utilizing the infrared temperature measurement visual simulation method and device provided by the invention, the infrared temperature measurement image of real substation equipment can be simulated, the infrared temperature measurement visual simulation method and device are used for carrying out infrared temperature measurement real operation skill training, examination, skill identification and the like on substation operation and maintenance personnel, and meanwhile, the danger degree of a real site is reduced.
Drawings
FIG. 1 is a schematic flow chart of a visual simulation method for infrared temperature measurement provided by the present invention;
FIG. 2 is a diagram illustrating multiplication results according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating a multiplication result value according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating the placement of a virtual camera according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a three-dimensional model of substation equipment in an embodiment of the present invention;
FIG. 6 is a schematic diagram of mapping coordinates of a three-dimensional model according to an embodiment of the present invention;
FIG. 7 is a diagram illustrating a map according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of an infrared thermometry image according to an embodiment of the present invention;
fig. 9 is a schematic frame diagram of the infrared temperature measurement visualization simulation device provided by the present invention.
Detailed Description
The technical contents of the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, an embodiment of the present invention first provides a substation equipment-oriented infrared temperature measurement visualization simulation method. The infrared temperature measurement visual simulation method 100 at least comprises the following steps:
101: and establishing a model of the infrared thermal imaging dynamic map, and establishing a three-dimensional model of the transformer substation equipment for infrared temperature measurement.
102: and creating an infrared imaging map of the three-dimensional model of the substation equipment according to the model of the infrared thermal imaging dynamic map.
103: and determining the temperature of the substation equipment, and generating an infrared temperature measurement image of the substation equipment according to the temperature and the infrared imaging map.
It should be noted that the execution subject of the infrared temperature measurement visualization simulation method 100 may be a terminal device with a computing function, such as a Personal Computer (PC), a tablet computer, a smart phone, or the like, or may be a server, or the like.
The following is a detailed description of the above steps:
101: and establishing a model of the infrared thermal imaging dynamic map, and establishing a three-dimensional model of the transformer substation equipment for infrared temperature measurement.
The model of the infrared thermal imaging dynamic map can also be an algorithm of the infrared thermal imaging dynamic map, and the model is used for dynamically simulating and calculating the infrared thermal imaging map in a three-dimensional simulation environment.
Specifically, the method for establishing the model of the infrared thermal imaging dynamic atlas comprises the following steps: in a three-dimensional scene, acquiring a corresponding image through a virtual camera, and determining a multiplication result of RGB (red, green and blue) colors of corresponding pixels in the image and RGB colors of preset pixels aiming at each pixel in the image; determining the RGB color of the newly established pixel according to the multiplication result; and determining the RGB color with the same red channel value as the newly-established pixel from the map colors of the preset gradient tone band, and taking the RGB color as the RGB color of the corresponding pixel in the image, thereby establishing a model so as to determine the infrared thermal imaging dynamic map of the image according to the model.
For example, a virtual camera named Cam Thermal can be created in a three-dimensional scene in a computer, such as unity, by three-dimensional software in a computer. And acquiring a picture graph which is rendered by Cam _ Thermal, and naming the picture graph as _ MainTex. Pixelate the _ mainTex image to obtain each pixel point. Each pixel point is composed of three colors of RGB, i.e., r-channel value (red), g-channel value (green), and b-channel value (blue). Can be represented by a three-dimensional vector as: float3 (r, g, b). Assuming that each pixel point in the _ MainTex image is i, the color calculation for pixel point i is as follows: the RGB values of the pixel point i are assumed to be ir, ig and ib respectively, and ir is greater than or equal to 0 and less than or equal to 1, ig is greater than or equal to 0 and less than or equal to 1, and ib is greater than or equal to 0 and less than or equal to 1. It is understood that the color has no negative value and the maximum value is 1. Defining a preset pixel: the RGB values of the green pixel x are 0.3f, 0.59f, 0.11f, i.e., float3(0.3f, 0.59f, 0.11 f). Multiplying the RGB color point of the pixel point i and the pixel point x to obtain float3(ir, ig, ib), float3(0.3f, 0.59f, 0.11f), and obtaining the result as scene.
Wherein, the dot product formula: scene i.x ═ i | x |, cos (a), a ═ the angle between vector i and vector x. As shown in fig. 2, the RGB color point of the pixel point i and x is multiplied to calculate the color similarity or similarity between the pixel point i and x. If the vector included angle between i and x is closer to 0 degree and | i | is closer to | x |, the color of the pixel point i is closer to the color of the point x. If the vector angle between i and x is close to 90 degrees, the value of scene is close to 0, and i and x are far from each other. By calculation, it can be set that | x | ═ 0.671, and when a ═ 0 and ig ═ 1, it is calculated that ir ═ 0.508, ib ═ 0.186, and | i | 1.137. According to the above formula, Scene is 0.763. Since the maximum value of ig is 1, when ig is 1, the value of Scene is maximum, 0.763. As shown in fig. 3, at this time, the RGB value of the pixel point i corresponds to a bright green. From this, it can be concluded that, when a is 0, the larger the scene value, the closer the color is to bright green, and the smaller the scene value, the closer the color is to dark green.
Creating a new pixel point sceneGray (i.e. a newly created pixel), whose RGB color is float3 (scene, scene, scene), at this time, the R value of sceneGray is G value, which is B value, and the final color is gray. As can be seen from the foregoing, when the Scene value approaches 0.763 (maximum value), the color of the Scene gray approaches white, and the Scene value approaches 0, the color of the Scene gray approaches black.
Drawing a gradual change tone color strip picture (namely presetting a gradual change tone color strip) and defining the gradual change tone color strip picture as ThermalTex, wherein the gradual change tone color strip picture consists of colors of three channels of RGB, and is a gradual change tone color strip from dark color to light color, for example, a gradual change tone color strip gradually changes from black to red and then gradually changes to yellow. If the ThermalTex only displays the color of the GB channel, it may also be a gradient color band from dark color to light color, such as a gradient color band from black color to green color. If ThermalTex only displays the color of the R channel, since the R channel is a red channel, the R channel alone only displays bright and dark colors (i.e., black, white, and gray bands of gradual change from black to white), and the approach of the R channel alone to white is equivalent to the approach to red.
And mixing the R channel and the GB channel, namely R channel + GB channel, to display the RGB map color of the first ThermalTex gradually-changed color-adjusting band.
It can therefore be determined that, for the ThermalTex atlas, when the red channel R is closer to white, the color of the image of the final object is closer to bright yellow, and when the red channel R is closer to black, the color of the image of the final object is closer to bright dark blue, the change in the RGB value of the image of the final object is controlled by the color value of the R channel, which is the final desired infrared imaging atlas effect.
Taking the R channel (red channel) of sceneGray, namely scenegray.r (0 ≦ scenegray.r ≦ 0.763, which is a gray value), can call the shadow function of unity: yult. xyz ═ tex2D (thermtex, float2(scenegray. r)). This function is expressed as: and searching a color value equal to the R channel of the sceneGray on the R channel of the gradient toning zone ThermalTex map, resampling the RGB three-channel color of the ThermalTex map corresponding to the R value and assigning the color to i, and then outputting the rbg value of the pixel point i to the coordinate position of the xyz. At this time, the infrared imaging color of the pixel point i is calculated.
And calculating the color of each pixel point in the _ MainTex graph according to the calculation mode of the infrared imaging color of the pixel point i. Finally, in a three-dimensional scene, because each frame of the _ MainTex image acquired from the Cam _ Thermal virtual camera is refreshed, a fluent and dynamic infrared Thermal imaging atlas picture can be obtained according to the infrared imaging color calculation mode of the pixel point i. Therefore, a model of the infrared thermal imaging dynamic map can be established, and a corresponding map can be obtained according to the model.
The infrared thermal imaging dynamic map picture is generated by the calculation mode, and the three-dimensional scene shows that: the color of the three-dimensional object tends to be white, and tends to be bright yellow in a thermal imaging picture of the virtual camera; the more the color of the three-dimensional object is close to black, the more the color of the three-dimensional object is close to dark blue in a thermal imaging picture of the virtual camera; the self color of the three-dimensional object is in a light gray-dark gray area, and the self color of the three-dimensional object is in an orange-red-dark red area in a thermal imaging picture of the virtual camera.
The computer may then build a three-dimensional model of the appearance of the substation primary equipment (i.e. the substation equipment) using modeling software, such as polygon modeling of 3ds max. Taking the heating of the wiring contact of the outdoor open type power transformation primary electric equipment as an example, a three-dimensional model of the equipment wiring contact, the metal flange and the porcelain insulator sleeve can be established. The wiring contact object name is obj _ JXCT, the metal flange object name is obj _ JSFL, and the insulator bushing object name is obj _ CPTG. And giving a real color and material mapping to the transformer substation equipment, as shown in fig. 5, a colored rendering image 504 of the transformer substation equipment comprises rendering images of a wiring contact 501, a metal flange 502 and a porcelain insulator sleeve 503. The wire frame image 505 of the substation equipment includes wire frame images of the wiring contact 501, the metal flange 502, and the porcelain insulator sleeve 503.
In addition, the infrared thermometry visual simulation method 100 further includes: in a three-dimensional scene, establishing an infrared temperature measurement virtual camera and a display screen of the infrared temperature measurement virtual camera; in a three-dimensional scene, establishing a user visual angle virtual camera, taking the virtual camera as an infrared imaging virtual camera, and rotating the user visual angle virtual camera and the infrared imaging virtual camera along with the infrared temperature measurement virtual camera; and displaying the corresponding infrared temperature measurement image on a display screen through the display screen of the infrared temperature measurement virtual camera, and displaying the infrared temperature measurement image on the display screen to a user through the user visual angle virtual camera.
For example, a three-dimensional model of the infrared thermometry virtual camera may be established by a computer, a display screen of the infrared thermometry virtual camera is independently modeled, and two-dimensional coordinates of a map UV thereof are expanded. These three-dimensional models are imported into unity 3D. In unity3D, a user perspective virtual camera, i.e. a human perspective camera, is created, and an infrared imaging virtual camera (i.e. the virtual camera Cam Thermal described earlier) is created. The method includes the steps that a human visual angle camera of visible light is created and used for watching transformer substation equipment of normal three-dimensional rendering, and the human visual angle camera can be named as Cam _ Eye. The infrared Thermal imaging virtual camera Cam _ Thermal described above is led into the current three-dimensional scene. As shown in fig. 4, the three-dimensional model 404 of the human view camera Cam _ Eye and the three-dimensional model 405 of the infrared Thermal imaging virtual camera Cam _ Thermal are laid out in the positions of fig. 4. The three-dimensional model 404 of the human visual angle camera Cam _ Eye and the three-dimensional model 405 of the infrared Thermal imaging virtual camera Cam _ Thermal are set as sub-objects of the three-dimensional model 401 of the infrared camera (namely the three-dimensional model of the infrared temperature measurement virtual camera), so that the sub-objects move along with the three-dimensional model of the infrared temperature measurement virtual camera. Rendering the rendering picture of the three-dimensional model 405 of the infrared Thermal imaging virtual camera Cam _ Thermal into a texture mapping in real time in a texture rendering mode, and sending the mapping amplitude value to a mapping channel of the three-dimensional model 402 of the display screen, so that the infrared picture can be output to the three-dimensional model 402 of the display screen. The infrared imaging picture is visible through the three-dimensional model 404 of the human view camera Cam _ Eye.
A rendered layer of a thermographic three-dimensional object is created in unity 3D. A layer for rendering a thermal imaging three-dimensional object is created in unity3D, which may be named ThermalViewLayer, and layer 9. A rendered layer of a conventional three-dimensional object is created, which may be named CameraViewLayer, layer lay 10. The three-dimensional model of the infrared Thermal imaging virtual camera Cam _ Thermal is set to render objects of the Thermal ViewLayer layer, objects of the Camera ViewLayer layer are not rendered, and objects of other layers are rendered as usual. The three-dimensional model of the human-view camera Cam _ Eye is set to render the object of the cameraview layer, the object of the thermalview layer is not rendered, and the objects of other layers are rendered as usual.
102: and creating an infrared imaging map of the three-dimensional model of the substation equipment according to the model of the infrared thermal imaging dynamic map.
Wherein, the substation equipment can include: with wiring contact of outdoor open-type transformer primary electrical equipment, can also include: a metal flange, a porcelain bottle sleeve and the like which are connected with the ceramic bottle sleeve in sequence.
Specifically, the method for creating the infrared imaging map of the three-dimensional model of the substation equipment according to the model of the infrared thermal imaging dynamic map comprises the following steps: determining an infrared thermal imaging dynamic map of the substation equipment image according to the model of the infrared thermal imaging dynamic map; determining the color of the transformer substation equipment image in infrared thermal imaging according to the infrared thermal imaging dynamic map, wherein the color in the infrared thermal imaging is associated with the temperature; determining a heat energy transfer mode of a three-dimensional model of the substation equipment; and determining a map of the three-dimensional model of the substation equipment as an infrared imaging map according to the heat energy transfer mode and the color of the substation equipment image in the infrared thermal imaging.
The method for determining the mapping of the three-dimensional model of the substation equipment according to the heat energy transfer mode and the color of the substation equipment image in the infrared thermal imaging comprises the following steps: determining corresponding two-dimensional map coordinates according to the three-dimensional model; and determining the chartlet of the three-dimensional model of the substation equipment according to the two-dimensional chartlet coordinate, the heat energy transfer mode and the color of the substation equipment image in the infrared thermal imaging.
For example, infrared thermal imaging classes and attributes of three-dimensional models of substation equipment are created by a computer. Defining a TemperatureDataPoint class, setting the infrared thermal imaging effect of the three-dimensional model through the TemperatureDataPoint class, and defining the content of the TemperatureDataPoint class as follows.
1) A temperature variable of int type is defined, representing the temperature of the object. Temperature 18 (default Temperature is 18 degree centigrade)
2) A thermalTex variable defining a Texture picture type for storing a thermal imaging picture.
3) A heat transfer HeatTransfer class is defined for storing infrared data of heat transfer objects.
Defining a gameObject type obj variable in the HeatTransfer class for storing a heat transfer object, defining a ThermalTex variable in the Texture picture type in the HeatTransfer class for storing a thermal imaging map of the heat transfer object
4) A heatTransfer _ L1 variable of the List < HeatTransfer > class is defined to store properties of the class 1 heat-transfer object.
5) A heatTransfer _ L2 variable of the List < HeatTransfer > class is defined to store properties of the stage 2 heat-transfer object.
The two-dimensional coordinates of the maps UV of the three-dimensional models of these devices are unfolded and the two-dimensional coordinates of the maps UV of all three-dimensional models are non-overlapping. Unfolding and flattening the two-dimensional coordinates of the mapping UV of the three-dimensional model of the wiring contact, the metal flange and the porcelain insulator sleeve, as shown in FIG. 6, wherein FIG. 6 shows the two-dimensional coordinates 601 of the mapping UV of the wiring contact, the two-dimensional coordinates 602 of the mapping UV of the metal flange and the two-dimensional coordinates 603 of the mapping UV of the porcelain insulator sleeve.
The transfer mode of 3-level heat energy is determined according to the wiring contact, the metal flange and the porcelain insulator sleeve, the wiring contact generates heat, the heat energy is firstly transferred to the metal flange, and then the metal flange transfers the heat energy to the porcelain insulator sleeve. The connection contact and the metal flange belong to all heat transfer and the surface temperature is uniformly distributed, and because the porcelain insulator sleeve is positioned in the last stage heat transfer object, the temperature of the head of the porcelain insulator sleeve close to the metal flange is the highest, and the temperature of the bottom of the porcelain insulator sleeve is the lowest.
According to the infrared thermal imaging dynamic map, the infrared thermal imaging dynamic map of the transformer substation equipment image can be determined in the process of establishing the model of the infrared thermal imaging dynamic map, the color of the transformer substation equipment image in infrared thermal imaging can be analyzed and determined according to the infrared thermal imaging dynamic map, and then the fact that white appears bright yellow in the infrared thermal imaging map and represents high temperature can be determined; black appears as a dark blue color in the ir thermography spectrum, indicating a low temperature. Therefore, a map corresponding to the three-dimensional model is drawn.
It should be noted that the above-mentioned device wiring contact, metal flange and porcelain insulator sleeve can be regarded as a complete substation device, and then, in the complete device, the wiring contact, metal flange or porcelain insulator sleeve can also be regarded as a component.
In addition, the three-dimensional models of the devices can be imported into a unity scene, and rigid body collision attributes can be added to each three-dimensional model so as to be selected by a mouse and a ray.
Specifically, determining a map of a three-dimensional model of the substation equipment according to a heat energy transfer mode and the color of an image of the substation equipment in infrared thermal imaging includes: generating a white chartlet and a white-to-black gradient chartlet according to the heat energy transfer mode and the color of the transformer substation equipment image in the infrared thermal imaging; and determining the map of the three-dimensional model of the substation equipment according to the white map and the white-to-black gradient color map.
For example, a map corresponding to the three-dimensional model may be drawn by a computer, and may be two maps, one is a pure White map and named as Tex _ White, and one is a gradient map from White to dark gray (or black) from top to bottom (along the U coordinate direction) and named as Tex _ whiteto black, as shown in fig. 7, in which a pure White map 701 and a gradient map 702 from White to dark gray (or black) are shown. As a map of a three-dimensional model of the device.
Specifically, the method for determining the map of the three-dimensional model of the substation equipment according to the white map and the white-to-black gradient color map comprises the following steps: and determining the infrared imaging mapping of the three-dimensional model of the component in the substation equipment from the white mapping and the white-to-black gradient color mapping according to the solid structure and the heat energy transfer mode of the substation equipment.
For example, infrared thermal imaging properties may be configured by the computer for a three-dimensional model of the built substation equipment.
1) And binding the TemperatureDataPoint classes on the three-dimensional models of the wiring contact, the metal flange and the porcelain bottle sleeve respectively.
2) And setting the material attribute of each model.
The method includes the steps of setting object radius in a wiring contact TemperatureDataPoint class as aluminum, setting object radius in a metal flange TemperatureDataPoint class as iron, and setting object radius in a porcelain bottle sleeve TemperatureDataPoint class as porcelain.
3) The thermal imaging properties of the heat generating source are set.
In the three-dimensional models described above, the wiring contact is a heat generation source, and therefore, all thermal imaging attributes in the temperture datapoint class are set to the wiring contact.
A thermal Tex (Tex _ White) in the wiring contact tempreture datapoint class is set. Set heatTransfer _ L1 (list of primary heat transfer objects) in the wiring contact TemperatureDataPoint class: heatTransfer _ L1[0]. obj ═ metal flange objects (first stage heat transfer objects set as metal flanges), heatTransfer _ L1[0]. thermalTex ═ Tex _ White (thermographic maps of first stage heat transfer objects are set as pure White maps). Set heatTransfer _ L2 (secondary heat transfer object list) in the wiring contact tempraturedatapoint class: heatTransfer _ L2[0]. obj ═ a vase sleeve object (second stage heat transfer object set as a vase sleeve), heatTransfer _ L2[0]. thermalTex ═ Tex _ whitetotack (thermographic mapping of second stage heat transfer object set as a gradient color mapping from white to dark gray (or black) from top to bottom). It will be appreciated that this is determined by the physical structure of the apparatus and the nature of the manner in which the thermal energy is transferred.
103: and determining the temperature of the substation equipment, and generating an infrared temperature measurement image of the substation equipment according to the temperature and the infrared imaging map.
Specifically, according to the temperature and the infrared imaging map, an infrared temperature measurement image of the substation equipment is generated, and the method comprises the following steps: and determining the numerical value of the preset color variable according to the temperature, and generating an infrared temperature measurement image of the substation equipment according to the numerical value of the preset color variable and the infrared imaging map of the component in the substation equipment.
For example, a thermographic object may be generated by a computer by controlling the temperature variable values in each object temperature datapoint class.
(1) Setting the interval range of the temperature value of the temperature:
when the temperature is more than or equal to 0 and less than 30, the temperature of the equipment is normal. When the temperature is more than or equal to 30 and less than or equal to 150, the temperature of the equipment is abnormal.
(2) The heat-generating source object automatically generates a thermal imaging object.
Taking the above-mentioned object of "wiring contact" (obj _ JXCT) as an example of the heat source, when the temperature of the wiring contact is 30 ≤ and 150 ≤, the object is automatically copied to generate a new wiring contact model, named Copy _ obj _ JXCT.
Setting the rendering layer of Copy _ obj _ JXCT to 9 (i.e. Copy _ obj _ JXCT. lay ═ 9), putting the Copy _ obj _ JXCT object into the Thermal view layer rendering level, only the infrared Thermal imaging virtual camera Cam _ Thermal can render, and the human view camera Cam _ Eye cannot see.
Setting the rendering layer of obj _ JXCT to 10 (i.e. obj _ JXCT. lay ═ 10), putting the original obj _ JXCT object into the CameraViewLayer rendering layer, where only the human-view camera Cam _ Eye can render and the infrared Thermal imaging virtual camera Cam _ Thermal cannot see.
The Copy _ obj _ JXCT material ball is set to self-luminous material. The map of Copy _ obj _ JXCT self-luminous material is set to Tex _ White (White map).
The thermal imaging effect is changed by changing the brightness color of the object. A float type variable value is defined, and the calculation equation of the value is as follows: value/150 × 0.5 + 0.5.
When temperature is 30, this is the minimum temperature abnormal value, and value is 0.6. When the temperature is 150, the maximum temperature abnormal value is obtained, and the value is 1.
Therefore, the interval of value values is 0.6. ltoreq. value. ltoreq.1.
A color variable light color (i.e., a preset color variable) is defined, and the light color is new Vector3 (value, value, value), and the light color is a color that changes from light gray to white. The lightColor variable is assigned to the texture ball color channel of the Copy _ obj _ JXCT object. The thermal imaging effect is controlled by controlling the brightness color of the object.
(3) The level 1 heat transfer object automatically generates a thermal imaging object.
The 1-stage heat transfer object temperature 0.98. The 1-stage thermal transfer thermographic object, Copy _ obj _ JSFL, is automatically generated in the manner of (2) described previously.
(4) The 2-stage heat transfer object automatically generates a thermal imaging object. The 2-stage heat transfer object temperature 0.96 is the heat generating source object temperature.
The 2-stage thermal transfer thermographic object Copy obj CPTG is automatically generated using the method of equation (2) in step 103 described above. Wherein, the mapping of the Copy _ obj _ CPTG self-luminous material is set as Tex _ whiteto black (black and white gradient mapping). The second stage heat transfer object is the last stage, and the black-white gradient mapping can show the thermal imaging effect of excessive heat energy.
The final effect is shown in fig. 8, wherein fig. 8 shows a user perspective image 801 and an infrared thermometry image 802.
(5) In the manner described above, a three-dimensional model of all the devices (i.e., electrical devices) of the substation for infrared temperature measurement is established. For example, a three-dimensional simulation model of equipment in all substations suitable for infrared temperature measurement is established. And the properties of the automatically generated thermal imaging object are set for the heat generating source components of each model.
(6) Each device or component in the three-dimensional scene of the substation is given a unique ID.
(7) The three-dimensional scene of the whole transformer substation can be packaged into a client side so as to be convenient for later application.
Wherein, confirm the temperature of substation equipment, include: and obtaining the temperature of the substation equipment from the service end so as to determine the temperature of the substation equipment.
For example, as can be seen from the foregoing, by controlling the temperature value of the temperature, it is possible to control the Thermal imaging object to be automatically generated, and the object can only be captured by the infrared Thermal imaging virtual camera Cam _ Thermal and cannot be viewed by the human-view camera Cam _ Eye.
And creating a temperature fault setting server by using the three-dimensional model of the equipment in the transformer substation which is configured with the unique ID. Each device or component may be selected in the troubleshooting service end system. The temperature value of the selected equipment or component is set, and the temperature can be set between 30 and 150. The temperatures of multiple components may be set simultaneously. After the setting is completed, the personnel clicks a fault issuing button, and the system assembles the set temperature fault information (including the part ID and the fault temperature value) into a string type message and issues the string type message to all infrared temperature measurement client sides (namely the client sides). When the client receives the fault information, the client finds the object in the three-dimensional scene according to the part ID and sets the temperature value of the object as the fault temperature value. When the temperature of the object is set to the failure temperature value, the particular imaged object will be automatically created in the manner previously described. Finally, in the three-dimensional scene of the client, all three-dimensional equipment models can be seen through the human visual angle camera Cam _ Eye camera, and all models of the heating parts can be seen through the infrared Thermal imaging virtual camera Cam _ Thermal.
Therefore, the embodiment of the invention can truly simulate and calculate the infrared thermal imaging spectrum of the infrared thermometer, can simulate and restore 100% of current heating type faults, voltage heating type faults, main transformer radiating fin low-temperature faults and the like on the site of a transformer substation, can set 2-level heat transfer aiming at different components, and achieves the effect consistent with the actual heating equipment on the site. By using the invention, the substation operation and maintenance personnel can be trained, examined and evaluated in the actual operation skills and the skill identification of the infrared temperature measurement.
The embodiment of the invention also provides an infrared temperature measurement visual simulation device for the substation equipment, which can be applied to intelligent equipment such as computers. As shown in fig. 9, the infrared thermometry visualization simulation apparatus 900 at least includes:
the establishing module 901 is used for establishing a model of the infrared thermal imaging dynamic spectrum and establishing a three-dimensional model of the substation equipment for infrared temperature measurement.
The creating module 902 is configured to create an infrared imaging map of the three-dimensional model of the substation device according to the model of the infrared thermal imaging dynamic map.
And the generating module 903 is used for determining the temperature of the substation equipment and generating an infrared temperature measurement image of the substation equipment according to the temperature and the infrared imaging map.
In the embodiment of the present invention, the establishing module 901 obtains a corresponding image through a virtual camera in a three-dimensional scene, and determines, for each pixel in the image, a result of multiplying an RGB color of the corresponding pixel in the image by an RGB color of a preset pixel; determining the RGB color of the newly established pixel according to the multiplication result; and determining the RGB color with the same red channel value as the newly established pixel from the map colors of the preset gradient tone band, and taking the RGB color as the RGB color of the corresponding pixel in the image, thereby establishing the model of the infrared thermal imaging dynamic map.
The creating module 902 is used for determining an infrared thermal imaging dynamic map of the transformer substation equipment image according to the model of the infrared thermal imaging dynamic map; determining the color of the transformer substation equipment image in infrared thermal imaging according to the infrared thermal imaging dynamic map, wherein the color in the infrared thermal imaging is associated with the temperature; determining a heat energy transfer mode of a three-dimensional model of the substation equipment; and determining a map of the three-dimensional model of the substation equipment as an infrared imaging map according to the heat energy transfer mode and the color of the substation equipment image in the infrared thermal imaging.
Specifically, the creating module 902 first determines corresponding two-dimensional map coordinates according to the three-dimensional model; and determining the chartlet of the three-dimensional model of the substation equipment according to the two-dimensional chartlet coordinate, the heat energy transfer mode and the color of the substation equipment image in the infrared thermal imaging. Then, the creating module 902 generates a white map and a white-to-black gradient color map according to the heat energy transfer mode and the color of the substation equipment image in the infrared thermal imaging; and determining the map of the three-dimensional model of the substation equipment according to the white map and the white-to-black gradient color map. Next, the creating module 902 determines an infrared imaging map of a three-dimensional model of a component in the substation device from the white map and the white-to-black gradient color map according to the physical structure and the heat energy transfer manner of the substation device.
The generating module 903 is used for acquiring the temperature of the substation equipment from the server side so as to determine the temperature of the substation equipment; and determining the numerical value of the preset color variable according to the temperature, and generating an infrared temperature measurement image of the substation equipment according to the numerical value of the preset color variable and the infrared imaging map of the component in the substation equipment.
The transformer substation equipment-oriented infrared temperature measurement visual simulation method and device provided by the invention are explained in detail above. It will be apparent to those skilled in the art that various modifications can be made without departing from the spirit of the invention.
Claims (10)
1. A substation equipment-oriented infrared temperature measurement visual simulation method is characterized by comprising the following steps:
establishing a model of an infrared thermal imaging dynamic map, and establishing a three-dimensional model of the transformer substation equipment for infrared temperature measurement;
creating an infrared imaging map of a three-dimensional model of the substation equipment according to the model of the infrared thermal imaging dynamic map;
and determining the temperature of the substation equipment, and generating an infrared temperature measurement image of the substation equipment according to the temperature and the infrared imaging map.
2. The infrared thermometry visual simulation method of claim 1, wherein said modeling of the infrared thermography dynamic profile comprises the sub-steps of:
in a three-dimensional scene, acquiring a corresponding image through a virtual camera, and determining a multiplication result of RGB (red, green and blue) colors of corresponding pixels in the image and RGB colors of preset pixels aiming at each pixel in the image;
determining the RGB color of the newly established pixel according to the multiplication result;
and determining the RGB color with the same red channel value as the newly established pixel from the map colors of the preset gradient tone band, and taking the RGB color as the RGB color of the corresponding pixel in the image, thereby establishing the model so as to determine the infrared thermal imaging dynamic map of the image according to the model.
3. The infrared thermometry visual simulation method of claim 1, wherein the creating of the infrared imaging map of the three-dimensional model of substation equipment from the model of the infrared thermography dynamic map comprises the sub-steps of:
determining an infrared thermal imaging dynamic map of the substation equipment image according to the model of the infrared thermal imaging dynamic map;
determining the color of a substation equipment image in infrared thermal imaging according to the infrared thermal imaging dynamic map, wherein the color in the infrared thermal imaging is associated with the temperature;
determining a heat energy transfer mode of the three-dimensional model of the substation equipment;
and determining a map of the three-dimensional model of the substation equipment as an infrared imaging map according to the heat energy transfer mode and the color of the substation equipment image in the infrared thermal imaging.
4. The infrared temperature measurement visual simulation method of claim 3, wherein the determining of the map of the three-dimensional model of the substation equipment according to the thermal energy transfer mode and the color of the substation equipment image in the infrared thermal imaging comprises the following sub-steps:
determining corresponding two-dimensional map coordinates according to the three-dimensional model;
and determining the map of the three-dimensional model of the substation equipment according to the two-dimensional map coordinates, the heat energy transfer mode and the color of the substation equipment image in the infrared thermal imaging.
5. The infrared temperature measurement visual simulation method of claim 3, wherein the determining of the map of the three-dimensional model of the substation equipment according to the thermal energy transfer mode and the color of the substation equipment image in the infrared thermal imaging comprises the following sub-steps:
generating a white chartlet and a white-to-black gradient chartlet according to the heat energy transfer mode and the color of the transformer substation equipment image in the infrared thermal imaging;
and determining the map of the three-dimensional model of the substation equipment according to the white map and the white-to-black gradient color map.
6. The infrared temperature measurement visual simulation method of claim 5, wherein the determining of the map of the three-dimensional model of the substation equipment according to the white map and the white-to-black gradient color map comprises the following sub-steps:
and determining the infrared imaging mapping of the three-dimensional model of the component in the substation equipment from the white mapping and the white-to-black gradient color mapping according to the solid structure and the heat energy transfer mode of the substation equipment.
7. The infrared thermometry visual simulation method of claim 2, further comprising the steps of:
in a three-dimensional scene, establishing an infrared temperature measurement virtual camera and a display screen of the infrared temperature measurement virtual camera;
in a three-dimensional scene, establishing a user visual angle virtual camera, and taking the virtual camera as an infrared imaging virtual camera, wherein the user visual angle virtual camera and the infrared imaging virtual camera rotate along with the infrared temperature measurement virtual camera;
the method comprises the steps of rendering an infrared imaging map by an infrared imaging virtual camera, displaying a corresponding infrared temperature measurement image through a display screen of the infrared temperature measurement virtual camera, and displaying the infrared temperature measurement image on the display screen to a user through a user visual angle virtual camera.
8. The infrared thermometry visual simulation method of claim 1, wherein the determining the temperature of the substation equipment comprises the sub-steps of:
and obtaining the temperature of the substation equipment from the service end so as to determine the temperature of the substation equipment.
9. The infrared thermometry visual simulation method of claim 1, wherein the generating of the infrared thermometry image of the substation device according to the temperature and the infrared imaging map comprises the following sub-steps:
and determining a numerical value of a preset color variable according to the temperature, and generating an infrared temperature measurement image of the substation equipment according to the numerical value of the preset color variable and an infrared imaging map of a component in the substation equipment.
10. The utility model provides a visual analogue means of infrared temperature measurement towards substation equipment which characterized in that includes:
the building module is used for building a model of the infrared thermal imaging dynamic map and building a three-dimensional model of the transformer substation equipment for infrared temperature measurement;
the creating module is used for creating an infrared imaging map of the three-dimensional model of the substation equipment according to the model of the infrared thermal imaging dynamic map;
and the generating module is used for determining the temperature of the substation equipment and generating an infrared temperature measurement image of the substation equipment according to the temperature and the infrared imaging map.
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